id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12217	boost.iostreams on Android can't find ZLIB	ruslan_baratov@…	Jonathan Turkanis	"boost.iostreams on Android can't find ZLIB if host is Linux. Works fine for OSX host.

Build options:
{{{
-a
link=static
threading=multi
variant=debug,release
--layout=tagged
toolset=gcc-ndk
--user-config=/home/travis/.hunter/_Base/1e7fc8f/3bce312/7416caa/Build/Boost/__iostreams/Build/boost.user.jam
--with-iostreams
-s
NO_COMPRESSION=0
-s
NO_ZLIB=0
-s
NO_BZIP2=1
-s
ZLIB_INCLUDE=/home/travis/.hunter/_Base/1e7fc8f/3bce312/7416caa/Install/include
-s
ZLIB_LIBPATH=/home/travis/.hunter/_Base/1e7fc8f/3bce312/7416caa/Install/lib
-s
ZLIB_BINARY=zd
linkflags= -Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,-z,nocopyreloc -fPIE -pie
-j
2
}}}

boost.user.jam content:
{{{
using gcc
  : ndk
  : ""/home/travis/build/ruslo/hunter_sandbox/_ci/android-ndk-r10e/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-g++"" -fexceptions -frtti -Wno-psabi --sysroot=/home/travis/build/ruslo/hunter_sandbox/_ci/android-ndk-r10e/platforms/android-19/arch-arm -funwind-tables -finline-limit=64 -fsigned-char -no-canonical-prefixes -march=armv7-a -mfloat-abi=softfp -mfpu=neon -fdata-sections -ffunction-sections -Wa,--noexecstack -std=c++11 -DANDROID -isystem  /home/travis/build/ruslo/hunter_sandbox/_ci/android-ndk-r10e/platforms/android-19/arch-arm/usr/include -isystem  /home/travis/build/ruslo/hunter_sandbox/_ci/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.9/include -isystem  /home/travis/build/ruslo/hunter_sandbox/_ci/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a/include -isystem  /home/travis/build/ruslo/hunter_sandbox/_ci/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.9/include/backward
  : <archiver> ""/home/travis/build/ruslo/hunter_sandbox/_ci/android-ndk-r10e/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc-ar""
;
}}}

On Linux '-lrt' library added and it breaks ZLIB linking test:
{{{
""/.../android-ndk/android-ndk-r10e/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-g++""
""-fexceptions""
""-frtti""
""-Wno-psabi""
""--sysroot=/.../android-ndk/android-ndk-r10e/platforms/android-19/arch-arm""
""-funwind-tables""
""-finline-limit=64""
""-fsigned-char""
""-no-canonical-prefixes""
""-march=armv7-a""
""-mfloat-abi=softfp""
""-mfpu=neon""
""-fdata-sections""
""-ffunction-sections""
""-Wa,--noexecstack""
""-std=c++11""
""-DANDROID""
""-isystem""
""/.../android-ndk/android-ndk-r10e/platforms/android-19/arch-arm/usr/include""
""-isystem""
""/.../android-ndk/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.9/include""
""-isystem""
""/.../android-ndk/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a/include""
""-isystem""
""/.../android-ndk/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.9/include/backward""
-L""/.../hunter/_Base/xxxxxxx/3bce312/7416caa/Install/lib""
-Wl,-R
-Wl,""/.../hunter/_Base/xxxxxxx/3bce312/7416caa/Install/lib""
-Wl,-rpath-link
-Wl,""/.../hunter/_Base/xxxxxxx/3bce312/7416caa/Install/lib""
-o
""bin.v2/standalone/ac/gcc-ndk/debug/link-static/threading-multi/zd""
-Wl,--start-group
""bin.v2/standalone/ac/gcc-ndk/debug/link-static/threading-multi/main.o""
-Wl,-Bstatic
-lzd
-Wl,-Bdynamic
-lrt <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
-Wl,--end-group
-g
-pthread
-Wl,--fix-cortex-a8
-Wl,--no-undefined
-Wl,--gc-sections
-Wl,-z,noexecstack
-Wl,-z,relro
-Wl,-z,now
-Wl,-z,nocopyreloc
-fPIE
-pie

/.../android-ndk/android-ndk-r10e/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.9/../../../../arm-linux-androideabi/bin/ld: error: cannot find -lrt
}}}

There is no '-lrt' on OSX and same configuration works fine:
{{{
""/.../android-ndk/android-ndk-r10e/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-g++""
""-fexceptions""
""-frtti""
""-Wno-psabi""
""--sysroot=/.../android-ndk/android-ndk-r10e/platforms/android-19/arch-arm""
""-funwind-tables""
""-finline-limit=64""
""-fsigned-char""
""-no-canonical-prefixes""
""-march=armv7-a""
""-mfloat-abi=softfp""
""-mfpu=neon""
""-fdata-sections""
""-ffunction-sections""
""-Wa,--noexecstack""
""-std=c++11""
""-DANDROID""
""-isystem""
""/.../android-ndk/android-ndk-r10e/platforms/android-19/arch-arm/usr/include""
""-isystem""
""/.../android-ndk/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.9/include""
""-isystem""
""/.../android-ndk/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a/include""
""-isystem""
""/.../android-ndk/android-ndk-r10e/sources/cxx-stl/gnu-libstdc++/4.9/include/backward""
-L""/.../hunter/_Base/xxxxxxx/3bce312/7416caa/Install/lib""
-Wl,-R
-Wl,""/.../hunter/_Base/xxxxxxx/3bce312/7416caa/Install/lib""
-Wl,-rpath-link
-Wl,""/.../hunter/_Base/xxxxxxx/3bce312/7416caa/Install/lib""
-o
""bin.v2/standalone/ac/gcc-ndk/debug/link-static/threading-multi/zd""
-Wl,--start-group
""bin.v2/standalone/ac/gcc-ndk/debug/link-static/threading-multi/main.o""
-Wl,-Bstatic
-lzd
-Wl,-Bdynamic
-Wl,--end-group
-g
-Wl,--fix-cortex-a8
-Wl,--no-undefined
-Wl,--gc-sections
-Wl,-z,noexecstack
-Wl,-z,relro
-Wl,-z,now
-Wl,-z,nocopyreloc
-fPIE
-pie
}}}

There should be no difference because same Android toolchain used on both hosts. OS of host should not affect Android build.

* Linux log: https://s3.amazonaws.com/archive.travis-ci.org/jobs/131643137/log.txt
* OSX log: https://s3.amazonaws.com/archive.travis-ci.org/jobs/131643139/log.txt"	Bugs	new	To Be Determined	iostreams	Boost 1.61.0	Problem